/*-------------------------------------------------------------------*/
/* testpipechild2parent.c                                            */
/* The pipe system call.                                             */
/*-------------------------------------------------------------------*/
/* Error handling code omitted.                                      */
/* Read and write system call looping omitted.                       */
/*-------------------------------------------------------------------*/

#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
   int piPipeFd[2];
   int iPid;
   char pcBuffer[6];

   pipe(piPipeFd);

   iPid = fork();

   if (iPid == 0)
   {
      close(piPipeFd[0]);
      write(piPipeFd[1], "hello", 6);
      close(piPipeFd[1]);
      exit(0);
   }

   close(piPipeFd[1]);
   read(piPipeFd[0], pcBuffer, 6);
   close(piPipeFd[0]);

   printf("%s\n", pcBuffer);
   return 0;
}


/* Sample execution:

--> testpipeparent2child
hello
-->

*/